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"unorthodox" is also used as a crossword clue. If that's what you saw, the answer is often heretical (9 letters).
Definitions
independent in behavior or thought
Word origin
From un- + orthodox.
Used in a sentence
“The breakthrough came after 63 minutes as United’s unorthodox defence desperately tried to hold off a spell of sustained pressure.”
Source: Wiktionary, CC BY-SA 4.0
Used as a crossword answer1 curated clues
01“Offbeat”10 letters
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